/** @file
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The DXE CPU PCIE RP Library Implements After Memory PEIM
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Copyright (c) 2021, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include <Base.h>
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#include <Library/UefiLib.h>
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#include <Library/UefiBootServicesTableLib.h>
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#include <Library/IoLib.h>
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#include <Library/DebugLib.h>
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#include <Ppi/SiPolicy.h>
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#include <Library/HobLib.h>
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#include <Library/PciSegmentLib.h>
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#include <IndustryStandard/Pci22.h>
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#include <Protocol/SaPolicy.h>
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#include <Protocol/SaNvsArea.h>
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#include <Library/PcdLib.h>
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#include <Library/PciExpressHelpersLib.h>
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#include <Library/BaseMemoryLib.h>
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#include <ConfigBlock/PcieDxeConfig.h>
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#include <Register/SaRegsHostBridge.h>
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/**
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Update CPU PCIE RP NVS AREA tables
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**/
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VOID
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UpdateCpuPcieNVS (
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VOID
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)
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{
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EFI_STATUS Status;
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PCIE_DXE_CONFIG *PcieDxeConfig;
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SA_POLICY_PROTOCOL *SaPolicy;
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SYSTEM_AGENT_NVS_AREA_PROTOCOL *SaNvsAreaProtocol;
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DEBUG ((DEBUG_INFO, "Update Cpu Pcie NVS Area.\n"));
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Status = gBS->LocateProtocol (&gSaPolicyProtocolGuid, NULL, (VOID **) &SaPolicy);
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ASSERT_EFI_ERROR (Status);
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Status = GetConfigBlock ((VOID *)SaPolicy, &gPcieDxeConfigGuid, (VOID *)&PcieDxeConfig);
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ASSERT_EFI_ERROR (Status);
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Status = gBS->LocateProtocol (&gSaNvsAreaProtocolGuid, NULL, (VOID **) &SaNvsAreaProtocol);
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if (Status != EFI_SUCCESS) {
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DEBUG ((DEBUG_ERROR, "Locate SA NVS Area failed.\n"));
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return;
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}
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SaNvsAreaProtocol->Area->Peg0LtrEnable = PcieDxeConfig->PegPwrOpt[0].LtrEnable;
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SaNvsAreaProtocol->Area->Peg0ObffEnable = PcieDxeConfig->PegPwrOpt[0].ObffEnable;
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SaNvsAreaProtocol->Area->Peg1LtrEnable = PcieDxeConfig->PegPwrOpt[1].LtrEnable;
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SaNvsAreaProtocol->Area->Peg1ObffEnable = PcieDxeConfig->PegPwrOpt[1].ObffEnable;
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SaNvsAreaProtocol->Area->Peg2LtrEnable = PcieDxeConfig->PegPwrOpt[2].LtrEnable;
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SaNvsAreaProtocol->Area->Peg2ObffEnable = PcieDxeConfig->PegPwrOpt[2].ObffEnable;
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SaNvsAreaProtocol->Area->Peg3LtrEnable = PcieDxeConfig->PegPwrOpt[3].LtrEnable;
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SaNvsAreaProtocol->Area->Peg3ObffEnable = PcieDxeConfig->PegPwrOpt[3].ObffEnable;
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SaNvsAreaProtocol->Area->PegLtrMaxSnoopLatency = V_SA_LTR_MAX_SNOOP_LATENCY_VALUE;
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SaNvsAreaProtocol->Area->PegLtrMaxNoSnoopLatency = V_SA_LTR_MAX_NON_SNOOP_LATENCY_VALUE;
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}
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